Endress+Hauser Oxymax COS61D

Digital oxygen sensor

Digital optical sensor for the concentration of oxygen dissolved in water with Memosens technology.

Memosens optical oxygen sensor for water, wastewater and utilities.

Optical oxygen measurement

Aeration tank, river monitoring, water treatment, fish farming

Digital, optical measurement of dissolved oxygen based on fluorescence quenching
Measurement possible in still water

0 to 20 mg/l
0 to 200 %SAT
0 to 400 hPa

Oxygen-sensitive molecules (marker) are integrated in an optical active layer (fluorescence layer). The fluorescence layer surface is in contact with the medium. The sensor optics are directed at the back of the fluorescence layer. The sensor optics transmit green light pulses to the fluorescence layer. The markers respond (fluoresce) with red light pulses. The duration and intensity of the response signals depend directly on the oxygen contents or partial pressure.

Calibration data saved in sensor
High degree of EMC protection

Sensor shaft: stainless steel 1.4435
Membrane cap: POM

Diameter: 40 mm (1.57 inch)
Shaft length: 186 mm (7.32 inch)

-5 to 60 В°C
(20 to 140 В°F)

Max. 10 bar abs
(Max. 145 psi)

NTC 30K

Process connection: G1, NPT 3/4"
Cable connection: fixed cable or TOP68 plug-in-head